统计图表：分组数据的均值与标准差计算可视化

GeoGebra 命令及参数

1. Element(DtSq, DataSet) → Dt0
2. Sequence(Element[Dt0, Mod[Strt + (k * Rate), 20] + 1], k, 1, Size) → Smp1
3. Max(Smp1) → DtMx
4. Min(Smp1) → DtMn
5. Element(AcSq, DataSet) → Ac0
6. If(CW > CWUB, NmbCls1 - 1, NmbCls1) → NmbCls2
7. Sequence(DtMn + (k * CW), k, 0, NmbCls2 - 1) → LCLSq
8. Sequence(UCL0 + (k * CW), k, 0, NmbCls2 - 1) → UCLSq
9. Sequence("to", k, 1, NmbCls2) → ToSq
10. Sequence(CountIf[Element[LCLSq, k] ≤ x ≤ Element[UCLSq, k], Smp1], k, 1, NmbCls2) → FrqSq
11. Sum(FrqSq) → ChkSz
12. Sequence((Element[LCLSq, k] + Element[UCLSq, k]) / 2, k, 1, NmbCls2) → MdPts
13. Segment(TbUL, TbUR) → tbtp
14. Segment(TbUL, TbLL) → tblf
15. Segment(TbUR, TbLR) → tbrt
16. Segment(TbUM, TbLM) → tbvm
17. Sequence((Element[MdPts, k] * Element[FrqSq, k]), k, 1, NmbCls2) → XFSq
18. Sequence((Element[MdPts, k]^(2) * Element[FrqSq, k]), k, 1, NmbCls2) → XsqFSq
19. Sum(XsqFSq) → XsqFSum
20. Sum(XFSq) → XFSum
21. Element(DDSq, DataSet) → DD
22. Element(ClsLbSq, DataSet) → Class
23. Element(StObSq, DataSet) → StatObj
24. Element(UntSq, DataSet) → Unit
25. Sequence(Segment[(TbLf, TbTp - (TbRwHt * k)), (TbRt, TbTp - (TbRwHt * k))], k, 1, NmbCls2 + 1) → TbHLn
26. Sequence(Text[Element[MdPts, k], (0.6, TbTp - 0.35 - (k * TbRwHt))], k, 1, NmbCls2) → MdPtTx
27. Sequence(Text[Element[LCLSq, k], (2, TbTp - 0.35 - (k * TbRwHt))], k, 1, NmbCls2) → LCLTxt
28. Sequence(Text[Element[FrqSq, k], (5.2, TbTp - 0.35 - (k * TbRwHt))], k, 1, NmbCls2) → FrqSqTx
29. Sequence(Text[Element[UCLSq, k], (3.4, TbTp - 0.35 - (k * TbRwHt))], k, 1, NmbCls2) → UCLSqTx
30. Sequence(Text[Element[ToSq, k], (2.9, TbTp - 0.35 - (k * TbRwHt))], k, 1, NmbCls2) → ToSqTx